diff --git a/component_failure_modes_definition/component_failure_modes_definition.tex b/component_failure_modes_definition/component_failure_modes_definition.tex
index 4eec78a..77948a6 100644
--- a/component_failure_modes_definition/component_failure_modes_definition.tex
+++ b/component_failure_modes_definition/component_failure_modes_definition.tex
@@ -350,7 +350,7 @@ Electrical resistors can fail by going OPEN or SHORTED.
  
 For a given resistor R we can apply the 
 function $fm$ to find its set of failure modes thus  $ fm(R) =  \{R_{SHORTED}, R_{OPEN}\} $.
-A resistor cannot fail with both conditions open and short active at the same time! The conditions
+A resistor cannot fail with the conditions open and short active at the same time! The conditions
 OPEN and SHORT are thus mutually exclusive.
 Because of this, the failure mode set $F=fm(R)$ is `unitary~state'.
 
diff --git a/fmmd_concept/fmmd_concept.tex b/fmmd_concept/fmmd_concept.tex
index 25ceae6..5a24b96 100644
--- a/fmmd_concept/fmmd_concept.tex
+++ b/fmmd_concept/fmmd_concept.tex
@@ -120,12 +120,12 @@ This is a bottom up methodology, which takes component failure modes
 and traces them to the SYSTEM level failures. The components
 have reliability data and this can be used to predict the 
 failure statistics in the design stage \cite{mil1992}.
-It can do this using probability \footnote{for a given component failure mode there will be a $\Beta$ value, the
+It can do this using probability \footnote{for a given component failure mode there will be a $\beta$ value, the
 probability that the component failure mode will cause a given SYSTEM failure}.
 %
 This lacks precision, or in other words, determinability prediction accuracy \cite{fafmea}, 
 as often the component failure mode can't be proven to cause a SYSTEM level failure, but
-assigned a probability $\Beta$ fator by the design engineer.
+assigned a probability $\beta$ fator by the design engineer.
 %Also, it can miss combinations of failure modes that will cause SYSTEM level errors.
 %
 The results, as with FMEA are an $RPN$ number determing the significance of the SYSTEM fault.
@@ -145,7 +145,7 @@ The results, as with FMEA are an $RPN$ number determing the significance of the
 
 This is a process that takes all the components in a system,
 and from the failure modes of those components
-tnote{for a given component failure mode there will be a $\Beta$ value, the
+tnote{for a given component failure mode there will be a $\beta$ value, the
 probability that the component failure mode will cause a given SYSTEM failure}.
 
 calculates a risk factor for each.